27 results about "Photoelectrolysis" patented technology

The invention relates to the field of photoelectrocatalytic materials, and discloses a photoelectrocatalytic material and a preparation method and application thereof.The photoelectrocatalytic material is formed by a bismuth molybdenum oxide and nickel-doped cobalt oxide heterostructure, the surface plasma resonance effect of gold nanoparticles and a conductive network of nitrogen-doped graphene and carbon quantum dots are combined, and a graded micro-nano structure is constructed; according to the present invention, the material has characteristics of high light current density, low charge transfer resistance and excellent catalytic activity and long-term stability in liquid-phase degradation and gas-phase oxidation through the built-in electric field and the optimization of the conductive network, such that the material has characteristics of high light current density and low charge transfer resistance, and can be used in liquid-phase degradation and gas-phase oxidation. The material is widely applicable to the fields of pollutant degradation, gas conversion, water photoelectrolysis and the like, and an efficient solution is provided for innovative development of a photocatalysis technology.

The invention relates to the technical field of optical communication, and provides a photoelectric hybrid connector. Comprising a male-end connector and a female-end connector, wherein the male-end connector is formed by mutually sleeving a first shell sleeve, a first insertion core assembly, a middle shaft assembly and a first tail sleeve; and the female end connector is formed by mutually sleeving a second shell sleeve, a second insertion core assembly, a power transmission assembly and a second tail sleeve. The invention provides a set of photoelectric hybrid connector suitable for similar vehicle-mounted scenes, an electric connection structure is ingeniously integrated into a traditional pure photoelectrolyzer, the size of an optical interface does not need to be additionally increased in the implementation process, the characteristics of an original structure are fully reused, and a position for arranging the electric connection structure is extracted from the original structure; not only can the problems of electric leakage and the like be avoided, but also the strength of the connector integrated with photoelectricity is not reduced.

The application provides a surface fluorine-modified bismuth vanadate photoelectrode and a preparation method and application thereof. Fluorine atoms are attached to the surface of the bismuth vanadate, and part of the fluorine atoms replace the two-coordinated oxygen atoms on the surface of the bismuth vanadate, namely the surface fluorine-modified bismuth vanadate photoelectrode. The surface fluorine-modified bismuth vanadate photoelectrode greatly improves the oxidation rate and molecular reaction efficiency of hydroxyl radicals generated by photoelectrolysis of water, effectively improves the glycerol oxidation efficiency, the selectivity of the product formic acid, and reduces the energy consumption of the reaction.

The present invention discloses a two-dimensional MXene functionalized In x Ga 1‑x N nanorods and their preparation methods and applications. x Ga 1‑x The N nanocolumn includes a substrate, a MXene layer on the substrate, and an In x Ga 1‑x N nanorods; wherein 0≤x≤1. The present invention uses two-dimensional MXene as a substrate and In x Ga 1‑x The functional layer between the N nanopillars not only broadens the choice of substrates and reduces costs, but also effectively reduces the interface impedance between the substrate and the nanopillars, which is conducive to enhancing the carrier transport performance and greatly improving the photoelectric performance of the nanopillars. At the same time, it avoids the disadvantage that the nanopillars are easily etched on the substrate and improves their photoelectric stability. x Ga 1‑x N nanorods have important application prospects in photoelectrolytic water splitting to produce hydrogen, photodetectors, and solar cells.

The invention belongs to the technical field of photoelectric catalytic materials, and particularly relates to a cerium-doped titanium dioxide nanorod array material as well as a preparation method and application thereof. Research finds that the cerium element has a large ionic radius and multivalent characteristics, and can effectively improve the photoelectrochemical properties of TiO2. The cerium doping not only can adjust the lattice structure and the electronic structure of TiO2 to expand the lattice structure, but also can introduce a new electronic energy level, adjust the electronic energy level and inhibit the compounding of photo-induced electrons and holes, so that the photocurrent density and the photoelectric conversion efficiency are remarkably improved, and the photoelectrocatalysis efficiency of titanium dioxide is improved. As a photoelectrocatalysis material, the cerium-doped titanium dioxide nanorod array material provided by the invention can be applied to the fields of photocatalysis and clean energy production, in particular to the application in hydrogen production by photoelectrolysis of water.

The application belongs to the technical field of photoelectrolysis of water materials, and relates to a CoSnO3 / BiVO4 photoelectric anode, a preparation method and application of the CoSnO3 / BiVO4 photoelectric anode in preparation of hydrogen peroxide, which comprises the following steps: 1, cleaning a conductive substrate; 2, preparing CoSn(OH)6 powder by a coprecipitation method after adding solution A into Co and Sn sources and then hydrothermal preparation; 3, dissolving Bi sources in a solvent B to prepare a Bi precursor solution, and introducing the Bi sources on the conductive substrate by an electrodeposition method; 4, dissolving V sources in a solvent C, introducing the V sources on the conductive substrate by using a spin coating device, and heating and calcining in a high-temperature heating device to prepare a photoelectric anode BiVO4 layer; 5, introducing CoSn(OH)6 on the conductive substrate by a spin coating method, and finally obtaining a CoSnO3 / BiVO4 photoelectric catalytic electrode by heating and calcining in a high-temperature heating device. The photoelectric catalyst prepared by the application can effectively improve the photocurrent of the original BiVO4 itself, and can have high selectivity and high yield in the reaction of preparing hydrogen peroxide by two-electron water oxidation, so that the cost of preparing hydrogen peroxide by photoelectric catalysis can be effectively reduced.

The present application relates to the field of copper foil technology. The present application provides a buried copper foil and a preparation method thereof and an electronic product. The preparation method comprises: obtaining copper foil; micro-roughening the copper foil; performing a first passivation on the micro-roughened copper foil; brush plating the passivated copper foil; wherein the copper foil comprises a single-sided photoelectrolytic copper foil, a double-sided photoelectrolytic copper foil or a rolled copper foil. Through the above operations, the present application obtains a buried copper foil with excellent performance and uniformity. The copper foil still has no oxidation phenomenon after high-temperature baking for 3 hours, and the resistor can be customized, thereby expanding the application scenarios.

The application relates to the technical field of purification or refining of silicon compounds, in particular to a high-purity quartz sand alkali metal targeted deep removal method, wherein quartz sand is mixed with silicon carbide abrasive and dry ground, and then is immersed into a solution containing ammonium fluoroborate, nano titanium dioxide and graphene quantum dots for etching; then a composite solution containing HEDP, EDTMPA, crown ether and beta-cyclodextrin is used to complex and leach alkali metals in a microwave field; then, through a photoelectric desorption reactor, the complex is decomposed under the cooperation of ultraviolet light and an electric field; then, a supergravity rotating bed is used for three-stage countercurrent washing; finally, a radio frequency plasma treatment is used to repair the crystal lattice and remove hydroxyl groups in a hydrogen atmosphere at high temperature; through multi-step cooperation, the alkali metals are deeply removed. Through surface modification, composite complexing, photoelectric desorption and other technologies, the total alkali metal content of the quartz sand is reduced, energy consumption is reduced, waste liquid is reduced, the purity and performance of the material are improved, and the application is suitable for high-end fields such as semiconductors.

The present application discloses a method and system for resource treatment of high-sulfate organic wastewater, relating to the technical field of wastewater treatment. The method includes the following steps: performing bipolar membrane separation treatment on the high-sulfate organic wastewater to obtain dilute alkali, dilute acid and dilute brine; performing evaporation and concentration treatment on the dilute alkali to obtain liquid alkali and condensed water; performing electrocatalytic oxidation treatment on the dilute brine to obtain electrocatalytic oxidation product water; performing DTRO concentration on the electrocatalytic oxidation product water to obtain DTRO product water and DTRO concentrated water; performing photoelectrolysis treatment on the dilute acid and the DTRO concentrated water to obtain hydrogen and anolyte; performing crystallization separation on the anolyte to obtain mirabilite and sodium persulfate products; using the DTRO product water to perform crystal dissolution treatment on the mirabilite to obtain a saturated or nearly saturated sodium sulfate solution and returning it to the photoelectrolysis step for cyclic treatment. The present application converts the sulfate in the wastewater into high-value sodium persulfate, avoiding the problem that a large amount of industrial by-product sodium sulfate is difficult to dispose of. At the same time, liquid alkali, dilute acid, product water, condensed water and hydrogen can also be obtained and all can be recycled, realizing the resource utilization of high-sulfate wastewater.

The invention belongs to the technical field of hydrogen production catalysts, and particularly relates to a photosensitive semiconductor photoelectric hydrolysis hydrogen production photoelectrode loaded with a specific catalyst and a preparation method of the photoelectrode. The cheap transition metal sulfide catalyst is constructed on the surface of the photosensitive semiconductor photoelectrode, so that the catalytic activity and the carrier separation efficiency of a photoelectrode interface are effectively improved, and the photoelectrochemical hydrogen production performance comparable with that of a noble metal catalyst is realized. The metal sulfide is stably combined with a photosensitive material, so that the system is endowed with excellent electrochemical stability, and the solar energy-to-hydrogen energy conversion efficiency is relatively high under an illumination condition. Besides, the preparation process is simple and convenient, the operation condition is mild, the raw material source is wide, the cost is low, good expandability and potential large-scale industrial application prospects are achieved, and a feasible technical scheme is provided for promoting large-scale preparation of clean hydrogen energy.

The invention provides a control signal transmission device for a quantum computer. The control signal transmission device comprises a laser light source, a digital-to-analog converter, an electro-optical modulation circuit, an optical fiber, a photoelectrolysis modulation circuit and a plurality of quantum bits. The laser light source provides light. The digital-to-analog converter provides a plurality of first control signals. An electro-optical modulation circuit integrates the first control signal into the light to generate an optical signal. An electro-optical modulation circuit provides the optical signal to the optical fiber. The photodemodulating circuit converts and splits the optical signal into a plurality of second control signals. And the photoelectrolysis modulation circuit transmits the second control signal to the corresponding quantum bit. And the quantum bits are controlled by the corresponding second control signals. The environment temperature set by the photolysis modulation circuit and the quantum bit is far lower than a default temperature value.

The invention relates to a surface treatment method of an ultralow-profile electrolytic copper foil suitable for high-frequency and high-speed signal transmission. The surface treatment method comprises the following steps: (1) providing a double-sided photoelectrolytic copper foil as a base material; (2) carrying out acid pickling treatment on the base material so as to remove surface oxides and activate the base material; (3) a copper alloy layer is electrically deposited on the surface of the base material subjected to acid pickling treatment; (4) performing electrochemical dealloying treatment on the copper alloy layer; (5) electrically depositing an anti-oxidation layer on the dealloyed base material; and (6) coating the substrate deposited with the anti-oxidation layer with a silane coupling agent. According to the preparation method, the traditional thought of constructing copper nodules is abandoned, the uniform copper alloy layer is deposited on the base material, then non-copper components in the copper alloy layer are selectively removed, and a nano-scale porous structure is left, so that an extremely low profile is obtained, and meanwhile, an enough specific surface area is kept to ensure excellent binding force with resin.

The present invention discloses a method for photocatalytically co-producing hydrogen, ethylene and adipic acid from waste PE plastics, comprising the following steps: (1) dissolving waste PE plastics in an acidic aqueous solution to obtain an aqueous electrolyte containing succinic acid; (2) assembling a photoanode, a cathode and the aqueous electrolyte containing succinic acid obtained in step (1) into a photoelectrochemical reaction cell; (3) applying light irradiation and a bias voltage to the photoelectrochemical reaction cell assembled in step (2) to carry out a photocatalytic reaction, wherein water in the aqueous electrolyte undergoes a reduction reaction at the cathode to generate hydrogen, and succinic acid undergoes an oxidation reaction at the photoanode to generate ethylene and adipic acid. The present invention utilizes the coupling of PE plastics and photoelectrolysis of water to improve the hydrogen production rate and energy conversion efficiency of the photocatalytic process, and effectively reduces the cost of hydrogen production by photoelectrolysis of water. PE is converted into gaseous ethylene that is easy to separate and can be reused for the production of high-value products such as ethylene oxide and the original PE. At the same time, adipic acid is also an important chemical raw material.

The application belongs to the technical field of photoelectrocatalytic materials, and particularly relates to an experimental method for rapidly preparing copper oxide nanowires and application thereof. The preparation method is as follows: using a copper mesh as a substrate, Cu(OH)2 nanowire arrays are rapidly prepared on the surface of the copper mesh through a constant-voltage anodization method, and CuO nanowire arrays are prepared in situ through rapid dehydration of the Cu(OH)2 through high-temperature heat treatment x Compared with the existing P-type semiconductor materials, the material has a wide visible light absorption range as a photoelectrocatalytic material, has good performance in the fields of photoelectrolysis of water to produce hydrogen and light-assisted Li-CO2 batteries, solves the problem of low light energy utilization, and is beneficial to separation of photo-generated electron-hole pairs, so that the copper oxide nanowire material can be used as a positive electrode material of the Li-CO2 battery to measure a charge-discharge voltage close to a theoretical value.

The present invention discloses a wind-photovoltaic electrolysis hydrogen production system based on the Internet of Things, which relates to the technical field of green hydrogen production. The present invention comprises a wind power generation module, which includes a wind turbine generator set and a wind power rectifier module. The wind turbine generator set utilizes wind power to generate electricity, and the generated alternating current is converted into direct current through the wind power rectifier module; a solar power generation module utilizes solar photovoltaic panels to collect solar energy and convert it into electrical energy, which together with wind power generation supplies power for the hydrogen production process; an Internet of Things module: which at least includes sensors, data acquisition and transmission equipment, and a cloud data control center, wherein the sensors are used to monitor wind power, solar power generation conditions and various parameters in the electrolysis hydrogen production process in real time; an electrolysis hydrogen production module: which utilizes direct current generated by wind power or solar power generation to electrolyze water to generate hydrogen and oxygen; and a battery module: which utilizes the wind power generation module and the solar power generation module to store electrical energy, and provides auxiliary power for the electrolysis hydrogen production module.

The present invention provides a flexible processing device and method for photoelectrochemical mechanical polishing of complex curved surface components of brittle materials. The device includes a polishing machine chassis, a light source, a polishing liquid pool, an electrolysis device and a support head. The light source is used to directly irradiate the polishing liquid pool during the polishing process. The polishing liquid pool is filled with polishing liquid inside, and a plurality of polishing brushes are fixed on the inner wall. The electrolysis device is connected to the polishing liquid pool, and the light source, the polishing liquid and the electrolysis device form a photoelectrolytic cell. The support head is connected with a threaded column, and a counterweight disk and a carrier disk are connected below the threaded column. The counterweight disk is placed on the carrier disk, and the support head is used to realize the rotary motion of the threaded column, the carrier disk and the counterweight disk. The complex curved surface component is fixed below the carrier disk and placed in the polishing liquid. The polishing brush uses the combined action of photoelectrochemical oxidation and mechanical friction in the photoelectrolytic cell to polish the complex curved surface component. The present invention can process complex curved surface components, and has the advantages of high polishing efficiency, environmental protection and simple operation.

This invention provides a method for the resource-based treatment of tailings wastewater and the simultaneous recovery of valuable metals, belonging to the field of mine wastewater treatment technology. The method includes: constructing a reaction system, which comprises a transparent reactor with a built-in working electrode, a power-free photovoltaic cell circuit system, a powered photoelectric electrolysis circuit system, and a light source; the photovoltaic cell circuit system and the photoelectric electrolysis circuit system are switched in parallel; the tailings wastewater is introduced into the transparent reactor and sealed; the light source is turned on, and only the photovoltaic cell circuit system is activated, to oxidize ammonia nitrogen into nitrogen gas and nitrate nitrogen, and recover some manganese metal; the light source is turned on, and only the photoelectric electrolysis circuit system is activated, to reduce manganese ions to recover manganese metal and reduce nitrate nitrogen into nitrogen gas. This invention provides a clean and efficient method for simultaneously oxidizing ammonia nitrogen in mine tailings wastewater and recovering valuable metals from the tailings wastewater; it utilizes an interconvertible photovoltaic cell reaction system and a photoelectric electrolysis reaction system to efficiently degrade ammonia-containing pollutants in tailings wastewater and recover manganese metal.

The utility model discloses a kind of floating solar photolysis water oxygenation hydrogen production devices, the device is provided with water storage pool and pure water tank, pure water tank is obtained by water evaporation in water storage pool, and water is supplied to photoelectrolytic cell by inlet pipe, solar cell assembly is arranged in the frame of photoelectrolytic cell, for converting solar light into electric energy, maintaining the required bias voltage of photoelectrolytic water;Its inside is provided with photoelectrochemical water decomposition component, for the energy electrolytic water hydrogen production in ultraviolet in solar spectrum and visible spectrum, photoelectrochemical water decomposition component includes anode catalyst layer, glass layer, light absorption layer and cathode catalyst layer, anode catalyst layer uses self-bias photo catalyst electrode, oxygen is generated under catalytic action and hydrogen is produced at cathode, infrared spectrum not absorbed by light anode is further converted into bias voltage by light absorption layer and maintained photolysis water hydrogen production.

The invention belongs to the field of photoelectrocatalysis, and discloses a method for synthesizing 2, 5-furandicarboxylic acid and hydrogen through synergistic photoelectrolysis of sulfite and cadmium sulfide / titanium dioxide (CdS / TiO2). According to the method, sulfite is introduced as an anode sacrificial agent and an optical / electric active substance, and cooperates with the photocatalyst CdS / TiO2 to promote photoelectrolysis of 5-hydroxymethylfurfural to synthesize high-added-value 2, 5-furandicarboxylic acid and green hydrogen, so that the method is beneficial to solving the problems of instability of the photocatalyst and high energy consumption of hydrogen production by electrolysis of water, and the method is suitable for industrial production of high-value-added 2, 5-furandicarboxylic acid and green hydrogen. And the synthesis reaction is carried out under a mild condition close to neutral, the use of strong base and high-temperature and high-pressure oxygen is avoided, the photoelectric energy utilization rate is high, the reaction is controllable, the operation is simple, the cost is low, and the potential application prospect is achieved.

The invention discloses a typical scene generation-based double-layer configuration optimization method for a wind-solar electrolytic hydrogen production system, and the method comprises the steps: carrying out the configuration searching optimization of an outer layer through employing a particle swarm optimization algorithm, and carrying out the energy management of an inner layer through employing a scene generation-based dynamic planning method; during inner-layer energy management, data of a combined typical scene is used as alternative input of original one-year environment data, the overall optimization target is to minimize the unit hydrogen production cost, and constraint conditions comprise a total hydrogen production capacity constraint, a component number constraint and a power constraint; according to the algorithm framework, an inner layer carries out optimal power distribution decision making according to a fixed configuration scheme, a corresponding objective function value is fed back to an outer layer, and the outer layer searches an optimal decision variable combination in a constraint interval by adopting a PSO algorithm. According to the method, good balance between optimization performance and calculation efficiency can be obviously achieved, and important theoretical reference and technical support are provided for system construction and capacity configuration optimization in related fields.

Methods, systems, and apparatus for photoelectrolytic disruption of PFAS, comprising a photoreactor vessel configured to receive an aqueous solution comprising PFAS, a UV light source configured to direct UV light onto the aqueous solution in the photoreactor vessel, a cathode within the photoreactor vessel configured to contact the aqueous solution within the photoreactor vessel, and an anode within the photoreactor vessel configured to contact the aqueous solution within the photoreactor vessel. An anode in an electrolyte solution, a power source configured to provide a voltage difference between the anode and the cathode, and a membrane or an ion bridge between the anode and the cathode. The cathode may be a mesh and may have a high surface area structure having an electrochemically active surface area greater than a geometric surface area.

The application belongs to the technical field of photoelectrolysis water material preparation, and relates to a method for preparing a non-metal element doped fullerene composite bismuth vanadate photoelectrolysis water, which comprises the following steps: s1, cleaning a conductive substrate; s2, performing non-metal element doping treatment on fullerene powder through a chemical vapor deposition method; s3, stirring modified fullerene after s2 treatment, a Bi source and a V source to prepare a catalyst slurry; s4, placing the conductive surface of the conductive substrate downward in the catalyst slurry, and performing hydrothermal in-situ growth to prepare a photoelectrocatalysis film; and s5, after natural cooling to room temperature, taking out the conductive substrate, and then heating and calcining to obtain a photoelectrolysis water electrode. The method is characterized in that the fullerene is doped with different metal elements through the chemical vapor deposition method, and then a uniform, dense and firm catalyst film is formed on the FTO through the hydrothermal in-situ growth method, and then a more stable and high-activity photoelectrolysis water electrode is obtained. The preparation method is simple, low in cost, and can realize large-scale electrode preparation.

The invention provides a method for resourcefully treating tailing wastewater and synchronously recovering valuable metals, and belongs to the technical field of mine wastewater treatment. The method comprises the following steps: establishing a reaction system, wherein the reaction system comprises a transparent reactor with a built-in working electrode, a photocell circuit system without a power supply, a photoelectrolysis circuit system with a power supply, a light source, and a photocell circuit system and a photoelectrolysis circuit system which are switched in parallel; the method comprises the following steps: introducing tailing wastewater into a transparent reactor, sealing, turning on a light source and only turning on a photocell circuit system, oxidizing and converting ammoniacal nitrogen into nitrogen and nitrate nitrogen, and recovering part of manganese metal; a light source is turned on, only a photoelectrolysis circuit system is started, manganese ions are reduced, manganese metal is recycled, and nitrate nitrogen is reduced and converted into nitrogen. The invention provides a method for cleanly and efficiently oxidizing ammoniacal nitrogen in mine tailing wastewater and synchronously recovering valuable metals in the tailing wastewater. Ammonia-containing pollutants in the tailing wastewater are efficiently degraded and manganese metal is recycled by utilizing a photocell reaction system and a photoelectrolysis reaction system which can be mutually converted.

The present invention discloses a solar-driven photo-electric-thermal-chemical synergistic hydrogen production system, including a focusing component for enhancing the intensity of solar radiation; a frequency division component for dividing the solar spectrum into three sections for use by different devices; a photovoltaic waste heat utilization device for generating electricity and preheating materials using the first light beam; a photo-electrolysis device for realizing photocatalytic electrolysis hydrogen production using the second light beam and the generated electric energy; and a thermochemical reaction device for using the heat generated by the third light beam and the photothermal absorber to promote each step of the thermochemical reaction. The various chemical reactions in the system constitute a complete cycle, the net reaction is the decomposition of water into hydrogen and oxygen, the energy source is solar radiation, and there is no other greenhouse gas emission in the whole process. Based on the principle of energy quality matching, the system uses different energy conversion methods to realize the step-by-step orderly conversion of solar energy to produce hydrogen, and is an efficient solar hydrogen production method.

The present invention provide a photoanode for a photoelectrolysis device, and a manufacturing method therefor. The photoanode for a photoelectrolysis device comprises: a polyimide (PI) layer; a laser-induced graphene (LIG) substrate formed by irradiating the PI layer with a laser; and a monoclinic tungsten oxide (m-WO3) nanostructure layer formed on the LIG substrate, wherein the PI layer is a flexible substrate and the photoanode is flexible.

The present invention discloses a wind-photovoltaic electrolysis hydrogen production system based on the Internet of Things, which relates to the technical field of green hydrogen production. The present invention comprises a wind power generation module, which includes a wind turbine generator set and a wind power rectifier module. The wind turbine generator set utilizes wind power to generate electricity, and the generated alternating current is converted into direct current through the wind power rectifier module; a solar power generation module utilizes solar photovoltaic panels to collect solar energy and convert it into electrical energy, which together with wind power generation supplies power for the hydrogen production process; an Internet of Things module: which at least includes sensors, data acquisition and transmission equipment, and a cloud data control center, wherein the sensors are used to monitor wind power, solar power generation conditions and various parameters in the electrolysis hydrogen production process in real time; an electrolysis hydrogen production module: which utilizes direct current generated by wind power or solar power generation to electrolyze water to generate hydrogen and oxygen; and a battery module: which utilizes the wind power generation module and the solar power generation module to store electrical energy, and provides auxiliary power for the electrolysis hydrogen production module.

The invention relates to the technical field of purification or refinement of silicon compounds, in particular to a high-purity quartz sand alkali metal targeted deep removal method, which comprises the following steps: mixing quartz sand and a silicon carbide grinding material, performing dry grinding, and immersing into a solution containing ammonium fluoroborate, nano titanium dioxide and graphene quantum dots for etching; then complexing and leaching the alkali metal in a microwave field by using a composite solution containing HEDP, EDTMPA, crown ether and beta-cyclodextrin; then decomposing the complex through a photoelectric desorption reactor under the cooperation of ultraviolet light and an electric field; carrying out three-stage countercurrent washing by using a supergravity rotating bed, treating and repairing crystal lattices by using radio frequency plasma, and carrying out high-temperature dehydroxylation in a hydrogen atmosphere; through multi-step cooperation, deep removal of alkali metal is realized. Through surface modification, composite complexing, photoelectric desorption and other technologies, the total alkali metal content of quartz sand is reduced, energy consumption is reduced, waste liquid is reduced, the material purity and performance are improved, and the method is suitable for the high-end field of semiconductors and the like.